A crisis in the US forces the Ultimates into action, as Cap, Iron Man and Thor finally reunite!

The Ultimates target the forces working behind the scenes to rip the USA apart, as Hydra battles SHIELD, Thor makes a startling choice and a secret weapon is revealed that could tip the country into chaos…forever! Plus: Kitty Pryde makes her stand and as the X-Men fight for their lives in the Sentinel-controlled states, the war for mutant liberation begins! And with a nation under siege, Miles Morales - the all-new Spider-Man - decides to become a member of the Ultimates…